Semi enclosed type, move flexibly, low noise, easy installation.Suitable for using in reciprocating motion of the occasion, is able to built in cable, tubing, water pipes, etc.Used widely as a component and service parts in CNC machine tools, electronic equipment, counting devices, machinery and electrical machines, etc.Product Name : Cable Drag ChainMaterial : PlasticInternal Size : 18 x 37mm/0.7 inch x 1.5 inch (H x W)External Size : 23 x 47mm/0.9 inch x 1.9 inch (H x W)Total Length(Approx.) : 1M/39.4 inchColor : BlackWeight : 1520gPackage Content : 4 x Cable Drag ChainOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.